The invention relates to an aflatoxin adsorbent and a method for removing aflatoxins in edible vegetable oil. An aflatoxin adsorbent is prepared through the steps of: under the action of a coupling agent, stirring oxidized graphene and aminopropyl silicagel microspheres at a temperature of 20-30 DEG C in a faintly acid environment so as to carry out amide coupling reaction; carrying out post-processing so as to obtain an oxidized graphene/aminopropyl silicagel microsphere composite material; and under the action of the coupling agent, stirring the obtained composite material and aflatoxin antibodies at a temperature of 0-4 DEG C in a faintly acid phosphate buffer solution so as to carry out the amide coupling reaction, and then carrying out post-processing to obtain the aflatoxin adsorbent. The aflatoxin adsorbent is good in adsorption effect, and can be used for adsorbing various aflatoxins; the aflatoxin adsorbent is granular, thereby facilitating the separation of the aflatoxin adsorbent after being used; and the aflatoxin adsorbent is applied to the removal of the aflatoxins in the edible vegetable oil, and can effectively reduce the pollution level of the aflatoxins in the edible vegetable oil.